Most brands accomplish the goal some are more functional than others but if you just want to test the cable to see if its OK a multimeter and a couple of pins or needles will do, tape the pins to the end of your multimeter leads set the meter to ohms and make sure you have continuity then carefully touch the ends looking for matching colors. If there's continuity in all 8 wires your good to go. Its a bit slow but if you have a multimeter then why buy a cable tester for just one cable Hope this helps